Pro-Ject Tube Box S2
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Free shipping: On all orders over 500 SEK
Tube-equipped RIAA amplifier for both MM and MC cartridges.
Experience the warm, relaxed, and full sound that only tubes can provide with the Pro-Ject Tube Box S2 – an innovative and compact phono preamplifier with replaceable ECC83 tubes and a fully discrete circuit design without op-amps. This little gem from Pro-Ject Audio Systems offers a calm, laid-back sound with lush midrange and impressive detail, perfect for both MM and MC cartridges. With tube rolling capabilities, you can also fine-tune the sound character to your own taste.
- Replaceable tubes – Two ECC83 (12AX7) tubes that can be easily swapped for personalized sound adjustment and tube rolling.
- Fully discrete circuit design – No use of op-amps – only carefully selected components for cleaner and more musical reproduction.
- Flexible cartridge matching – Five variable impedance settings for MM and fixed 47 kohm for high-output MC, plus six capacitance values – all adjustable on the front panel.
- Convenient front controls – Gain selector (40–63 dB) and subsonic filter directly accessible for easy optimization during listening.
- Dual mono construction – Separate circuit for each channel provides better channel separation and deeper stereo image.
- Low-noise FET input – Extremely low noise level and high dynamics, even at high gain settings.
- Robust sandwich chassis – Aluminum/metal construction that protects against vibrations and electromagnetic interference.
Specifications:
- Tubes: 2 × ECC83 (12AX7, replaceable)
- Gain: 40 / 43 / 50 / 60 / 63 dB
- Input impedance: 10 / 100 / 1k / 2k ohm (MM) / 47 kohm (MC)
- Input capacitance: 47 / 147 / 267 / 367 / 487 / 587 pF
- Signal-to-noise ratio: Up to 80 dB (A-weighted at 40 dB gain)
- THD (total harmonic distortion): <0.02–0.05 %
- RIAA equalization accuracy: ±0.4 dB (20 Hz–20 kHz)
- Subsonic filter: 20 Hz with 18 dB/octave (front button)
- Inputs/outputs: 1× pair RCA (in) / 1× pair RCA (out)
- Power supply: 18 V / 1000 mA DC (external power supply included)
- Dimensions (W × H × D): 103 × 73 × 131 mm (with connectors)
- Weight: 410 g (without power supply)
If you shop for more than SEK 490, we will ship free of charge! (within Sweden).
If ordered before 3pm on weekdays, we will ship the same day, provided the item is in stock. Normal delivery time is 1-5 working days, but in case of high order intake or ordering of certain products, delivery may take longer. Should any of the goods you ordered be out of stock, we will notify you as soon as possible.
We want you to be 100% satisfied with your purchase. Items can be returned or exchanged within 14 days of delivery. When exchanging or purchasing a new item in connection with a return, we offer the return shipping.
What does our stock status mean?
- In stock - Shipped immediately the same day if order is received before 3pm (weekdays)
- 3-8 days - Available in stock at supplier and ordered home immediately
- 4-12 days - Available in stock at supplier and ordered home immediately
We offer a guarantee of at least 2 years for all products, and some goods are covered by an extended guarantee of up to 5 years. This way you avoid costly insurances and can be safe as a customer. If there is a problem during the warranty period, please contact us, and we will solve it quickly and smoothly.
- Versatile payment options and secure transactions. Invoice or partial payment with Klarna, card payment, etc
- Fast deliveries: Orders received before 3pm are shipped the same day
- Safe delivery of products with reliable logistics partners (DHL & UPS)
- Price Guarantee to ensure our customers get the best possible deal
- Fast & professional customer service via e-mail and phone. (answer to e-mail within 24h)